CHLOEITIS. 175 



usculo, subtus convexiusculo ; apertura obliqua, subquadrato- 

 lunata, intus concolore, peristomate expausiusculo, superne antice 

 arcuato, subtus breviter reflexo, marginibus remotis, coluinellari 

 superne valde dilatato, umbilicum subtegente. 



"Diam. maj. 16, min. 13J, axis 10 mm." (Benson.} 

 Hab. Andaman Islands : Port Blair (Stoliczka, Nevill, Wood- 

 Mason, Roepstorff). 



A rather striking species of Trichochloritis, exhibiting a con- 

 siderable amount of variation as regards ornamentation and color- 

 ation. Pfeiffer figures several distinct forms. Lt.-Col. G-odwin- 

 A usten mentions two varieties (unifasciata and albina, both MS. 

 names of Nevill). The commonest form appears to be the one 

 with a dark chestnut or blackish -brown peripheral band. The 

 colour of the shell is usually white, but some forms have the 

 penultimate and last whorls reddish brown or dark fuscous above 

 the periphery, with or without the peripheral band, or the two 

 whorls may be entirely fuscous. White shells without band also 

 occur. The last whorl, moreover, is characterized by a girdle- 

 like swelling at the periphery bounded above by a corresponding 

 depression, \vhile the upper part of the whorl again is inflated. 

 The peristome is usually white, but when the last whorl is 

 entirely dark brown it is reddish violet. 



148. Chloritis cyclotrema, Benson. 



Helix cyclotrema, Benson, A. M. N. H. ser. 3, xi, 1863, p. 88 ; Hanley 



& Theobald, Conch. Ind. 1870, pi. 28, %. 10. 

 Ariophanta cyclotrema, Theobald, Cat. Shells Brit. India, 1876, 



p. 22. 

 Nanina (Ariophanta) cyclotrema, Tryon, Man. Conch, ser. 2, ii, 



1886, p. 17, pi. 2, fig. 22. 

 Helix (Planispira or Trachia) cyclotrema, Blanford, Proc. Malac. 



Soc. London, iii, 1899, p. 283. 



Original description : " H. testa sinistrorsa, obtecte umbilicata, 

 couoideo-subglobosa, oblique striatula, granulata, sub epidermide 

 cornea, albida ; spira conoidea, apice obtuse, subfoveata, suturis 

 impressis ; anfractibus 4j, convexis, gradatim crescentibus, ultimo 

 ad peripheriam obtuse angulato, unifasciato, antice lato, longe 

 descendente, subtus convexo ; apertura valde obliqua, rotundata, 

 peristomate dilatato, reflexiusculo, marginibus conniventibus, 

 approximatis, callo brevi junctis, columellari late auriculato um- 

 bilicum celante. 



"Diam. maj. 22, min. 18, axis 11 mm." (Benson.) 

 Hob. India: Sumeysur, base of Himalayas (Theobald). 



149. Chloritis anserina, Theobald. 



Helix anserina, Theobald, J. A. S. B. xxxiv, 1866, p. 276 (nom. 



mid.) ; ibid, xxxix, 1870, p. 395 (nom. mid.). 

 Helix anserina, Hanley & Theobald, Conch. Ind. 1875, pi. 112, 



fiffs. 7 & 10. 



